RZ Series Disk Drive Inst Guide Models RZ35,RZ26,RZ27,RZ28

This document is an Installation Guide for the Digital Storage Products RZ Series Disk Drives, specifically models RZ35, RZ26, RZ27, and RZ28. All models are 3.5-inch disk drives with single-ended SCSI-2 interfaces, offering formatted capacities ranging from 852 megabytes (RZ35) to 2.1 gigabytes (RZ28).

The guide provides essential information for configuring and installing these drives, covering:

• SCSI Address and Option Selections: How to set the unique SCSI ID (0-7) using jumpers, and configure spin-up behavior (immediate or command-driven). It also describes the Busy (green) and Fault (amber) LED indicators.
• SCSI Bus Termination: Detailed jumper configurations for RZ35/26 and RZ27/28 models to manage termination power, emphasizing that terminator resistor packs should only be installed if the drive is at the end of the SCSI bus.
• Power Connections and Requirements: Specifications for +5V and +12V DC power, including voltage tolerance, ripple/noise, current draw, and total power consumption during various operating states (spin-up, idle, random seeks).
• Mounting the Disk Drive: Instructions for physical installation, including recommended clearances and the use of four 6-32 screws, with a caution regarding screw length to prevent damage.
• Spindle Synchronization: Brief mention of an optional synchronized spindle operation using a dedicated pin.
• Summary of Specifications: Comprehensive tables detailing functional specifications (e.g., average seek time, transfer rates, rotational speed, track/surface details) and environmental specifications (e.g., operating/non-operating temperature, humidity, altitude).
• SCSI Connector Pin Assignments: A detailed table for the 50-pin Single-Ended SCSI connector.

The document stresses the importance of reading the guide thoroughly and observing antistatic precautions to prevent damage during handling and installation. It was published in July 1993.